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Q.
The mean length of an object is $5 \,cm$. Which of the following measurements is most accurate ?
Physical World, Units and Measurements
Solution:
To signify the mean length of an object comprising $5\, cm$ in dimension, it is better to present it with $4.9\, cm$ can be easily rounded up to $5 \,cm$. Whereas, other options are either less than or greater than the given option.